Adding owl-carousel

Sources: https://github.com/OwlFonk/OwlCarousel/archive/1.3.2.zip
https://github.com/OwlFonk/OwlCarousel/archive/v1.31.zip
https://github.com/OwlFonk/OwlCarousel/archive/v1.23.zip
https://github.com/OwlFonk/OwlCarousel/archive/v1.19.zip
https://github.com/OwlFonk/OwlCarousel/archive/v1.18.zip

Addresses https://github.com/cdnjs/cdnjs/issues/2503
Merge pull request #2525 from petecooper/master

Adding owl-carousel